Calls the json file case14.json which data origin is PYPOWER.
This network was converted from IEEE Common Data Format (ieee14cdf.txt) on 20-Sep-2004 by
cdf2matp, rev. 1.11, to matpower format and finally converted to pandapower format by
pandapower.converter.from_ppc. The vn_kv was adapted considering the proposed voltage levels in
Washington case 14

The IEEE 24-bus reliability test system was developed by the IEEE reliability subcommittee and published in 1979.
Some more information about this network are given by Illinois University case 24.
The data origin for this network data is PYPOWER.

Calls the json file case39.json which data origin is PYPOWER.
This network was published the first time in G. Bills et al., On-line stability analysis study, RP 90-1, E. P. R. I. North American Rockwell Corporation, Edison Electric Institute, Ed. IEEE Press, Oct. 1970,. Some more information about this network are given by Illinois University case 39.
Because the Pypower data origin proposes vn_kv=345 for all nodes the transformers connect node of the same voltage level.

This function provides the ieee case57 network with the data origin PYPOWER case 57.
Some more information about this network are given by Illinois University case 57.
Because the Pypower data origin proposes no vn_kv some assumption must be made. There are six areas with coinciding voltage level. These are:

This function calls the json file case_illinois200.json which data origin is MATPOWER. This network was published in A.B. Birchfield, T. Xu, K.M. Gegner, K.S. Shetye, T.J. Overbye, “Grid Structural Characteristics as Validation Criteria for Synthetic Networks,” IEEE Transactions on Power Systems, 2017.
Some additional information about this network are available at Illinois University Illinois 200.

ref_bus_idx - Since the MATPOWER case provides a reference bus without connected generator, because a distributed slack is assumed, to convert the data to pandapower, another bus has been assumed as reference bus. Via ‘ref_bus_idx’ the User can choose a reference bus, which should have a generator connected to. Please be aware that by changing the reference bus to another bus than the proposed default value, maybe a powerflow does not converge anymore!

ref_bus_idx - Since the MATPOWER case provides a reference bus without connected generator, because a distributed slack is assumed, to convert the data to pandapower, another bus has been assumed as reference bus. Via ‘ref_bus_idx’ the User can choose a reference bus, which should have a generator connected to. Please be aware that by changing the reference bus to another bus than the proposed default value, maybe a powerflow does not converge anymore!

This case represents the Polish 400, 220 and 110 kV networks during summer 2008 morning peak conditions. The data was provided by Roman Korab <roman.korab@polsl.pl> and to pandapower converted from MATPOWER.

ref_bus_idx - Since the MATPOWER case provides a reference bus without connected generator, because a distributed slack is assumed, to convert the data to pandapower, another bus has been assumed as reference bus. Via ‘ref_bus_idx’ the User can choose a reference bus, which should have a generator connected to. Please be aware that by changing the reference bus to another bus than the proposed default value, maybe a powerflow does not converge anymore!

ref_bus_idx - Since the MATPOWER case provides a reference bus without connected generator, because a distributed slack is assumed, to convert the data to pandapower, another buses (6077, 6161, 6305, 6306, 6307, 6308) has been assumed as reference bus. Via ‘ref_bus_idx’ the User can choose a reference bus, which should have a generator connected to. Please be aware that by changing the reference bus to another bus than the proposed default value, maybe a powerflow does not converge anymore!

ref_bus_idx - Since the MATPOWER case provides a reference bus without connected generator, because a distributed slack is assumed, to convert the data to pandapower, another bus has been assumed as reference bus. Via ‘ref_bus_idx’ the User can choose a reference bus, which should have a generator connected to. Please be aware that by changing the reference bus to another bus than the proposed default value, maybe a powerflow does not converge anymore!

Calls the json file GBnetwork.json which data is provided by W. A. Bukhsh, Ken McKinnon, Network data of real transmission networks, April 2013.
This data represents detailed model of electricity transmission network of Great Britian (GB). It consists of 2224 nodes, 3207 branches and 394 generators. This data is obtained from publically available data on National grid website. The data was originally pointing out by Manolis Belivanis, University of Strathclyde.